Horseshoe.



Patented Apr. I, I902 No. 696,649. I

a. A. LUCK.-

HUBSESHOEf wf/Mw LTUNTTED STATES PATENT Trina GEORGE A. LUCK, OFAMESBURY, MASSACHUSETTS.

HORSESHOE.

SPECIFICATION forming part of Letters Patent No. 696,649, dated April 1,1902. Application filed January 4,1902. Serial No. 88,463. (No model.)

To ctZZ whom it may concern:

Be it known that I, GEORGE ALUOK, of Amesbury, in the county of Essexand State of Massachusetts, have invented certain new and usefulImprovements in Horseshoes, of which the following is a specification.

This invention relates to horseshoes having detachable calks; and it hasfor its object to provide a simple and effective construction wherebythe calks of a shoe may be readily applied and removed and securely heldwhile in place.

Theinvention consists in the improvements which I will now proceed todescribe and claim.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a bottom plan view of a horseshoe embodying myinvention. Fig. 2 represents a top View of a portion of the shoe. Fig. 3represents a section on line 3 3 of Fig. 2. Fig. a represents a sectionon line 4 4 of Fig. 1. Fig. 5 represents in separate perspective viewsthe parts which embody my invention,

In carrying out my invention I form in a horseshoe at, having flat topand bottom surfaces, a series of mortises b, there being preferablythree, one for the toe-calk and two for the heel-calks. Each mortiseextends from the bottom to the top surface of the shoe and has at oneend an inwardly-projecting tongue 0, which is located below the uppersurface of the shoe. In the bottom surface of the shoe I form a seriesof wedge-shaped or tapering keyways d, each extending across said bottomsurface, there being one keyway for each mortise, the keyway extendingacross the end of the mortise opposite the tongue 0, as shown clearly inFig. 5.

e e 2 represent the calks, the body portions of which may be of thewedge shape, as here shown, or of any other suitable form. Each calk hasat its upper side an upwardly-projecting tenonf, provided at one endwith an outwardly-projecting tongue 9. Each tenon f is shorter than themortise Z) which it is intended to occupy, so that the tenon may beinserted in the mortise and then moved endwise to engage its tongue 9with the tongue 0 of the mortise. When the tongues g and c are engaged,as shown in Fig. 3, a wedgeshaped key 7?. is inserted in the keyway d,the key being formed to bear against the end of the tenon opposite thetongue 9, and thus prevent longitudinal movement of the tenon in themortise. The key therefore holds the tenon with its tongue g interlockedwith the tongue 0 of the mortise. The keyway and key are wedge-shaped,as before stated and as shown in Fig. 1, one edge of the keyway and thecorresponding edge of the key being beveled, as indicated in Figs. 3 and5, to prevent any tendency of the key to drop from the under side of theshoe. The key is made longer than the length of the keyway and the widthof the shoe and is made of mal1eable metal, so that its smaller end hcan be turned upwardly against the inner edge of the shoe, as shown inFig. 4, to prevent endwise movement of the key in one direction, thewedge shape of the keyway and key preventing endwise movement in theopposite direction. The key is thus securely interlocked with the shoe,so that it cannot be withdrawn untilits end 72. is bent downwardly. Thewedge shape of the keyway and key also causes the key when driven intothe keyway to force the tenon endwise against the shouldered end of themortise, thus preventing any possibility of a loose fit of the tenon inthe mortise.

It will be seen that the above-described construction provides for theready removal of a calk that is worn out or needs sharpening and theready replacement of the calk after it has been sharpened or the readysubstitution of a new calk for one that has been worn.

A horseshoe having fiat top and bottom surfaces, a mortise extendingthrough the thickness of the shoe from one of said surfaces to theother, said mortise having an inwardlyprojecting tongue at one end, adovetailed wedge-shaped keyway formed in the under side of the shoe andextending across said mortise at the end opposite said tongue, a calkhaving a tenon with an outwardly-projecting tongue at one end adapted toengage the tongue in the mortise, and a wedge-shaped key fitted in saidkeyway and arranged to bear on the tenon to hold the same in en= IOUgagement with the mortise-tongue, the length ing the key to force thetenon endwise against of said key exceeding the Width of the shoe, theshouldered end of the mortise. 10 so that the smaller end of the key isadapted In testimony whereof I have aflixed my sigto be bent upwardlyagainst one edge of the nature in presence of two witnesses.

5 shoe to prevent endwise movement of the key GEORGE A. LUCK. in onedirection, the wedge shape of the key- Witnesses: Way and key preventingendwise movement 0. F. BROWN,

of the key in the opposite direction, and caus- E. BATCHELDER.

